The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z).Literally speaking the epoch is Unix time 0 (midnight 1/1/1970), but 'epoch' is often used as a synonym for Unix time.Some systems store epoch dates as a signed 32-bit integer, which might cause problems on January 19, 2038 (known as the Year 2038 problem or Y2038).The converter on this page converts timestamps in seconds (10-digit), milliseconds (13-digit) and microseconds (16-digit) to readable dates.
World Time Buddy (WTB) is a convenient world clock, a time zone converter, and an online meeting scheduler. It's one of the best online productivity tools for those often finding themselves traveling, in flights, in online meetings or just calling friends and family abroad.
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The California Air Resources Board, with assistance from aftermarket catalytic converter manufacturers, has been developing a database to store and retrieve information on aftermarket catalytic converters that have been approved for use in California. These catalytic converters comply with the new regulations that became effective January 1, 2009. The database is currently under construction and contains some of the catalytic converters approved for OBD II vehicles. Once finalized, it will also include catalytic converters for non-OBD II vehicles.
*Toyota: Please follow this link to see catalytic converters that are legal on 2001-2004 4.7 liter Toyota Sequoia and 2003-2004 4.7 liter Toyota Tundra. to see catalytic converters that are legal on 2001-2004 4.7 liter Toyota Sequoia and 2003-2004 4.7 liter Toyota Tundra.
To access Executive Orders that are not shown in the database, please view the complete list of approved catalytic converters under the new regulations. Also, to access Executive Orders for only pre-OBD II vehicles under the new regulations please view the Pre-OBD II EO Listing.
For information on Executive Orders issued under the old regulations, view the summary list. All Executive Orders on this summary list are void and no longer in force and effect. The catalytic converters they cover cannot be sold in California effective December 31, 2008. Likewise, the used catalytic converters they covered cannot be sold in California effective July 10, 2008.
Please note that the database and lists are applicable to passenger cars, light-duty trucks, and medium-duty vehicles only. Executive Orders for motorcycle aftermarket catalytic converters can be viewed in the Motorcycle Aftermarket Parts Page.
Autodesk FBX SDK is a free* C++ software development kit (SDK) that lets you create plug-ins, converters, and other applications that use Autodesk FBX technology. With FBX you can translate and exchange 3D assets and media from a variety of sources quickly and easily. The SDK is available for Windows, OSX, iOS, and Linux operating systems, which enables software and hardware vendors to add support for the FBX format.
In April, staff at Yolo Food Bank in Woodland realized a catalytic converter had been stolen from a Prius they use to make small deliveries. Staff used their own cars to drop off food while the Prius was out of commission, said Maria Segoviano, director of marketing communications at the food bank.
The value of the precious metals in converters, particularly rhodium, has skyrocketed since late 2019, potentially driving the surge in theft. Rhodium is currently valued around $14,000 per troy ounce, about eight times the current price of gold.
Congress could also mandate that VIN numbers be etched onto converters. Under federal law, cars are already required to label several other parts, including the engine. A bill in congress would add catalytic converters to the list and create a grant program to help pay for marking existing vehicles.
Our PDF file converter does more than convert files to PDF. From compression and rotation to merging two different PDFs and splitting one PDF into two, you can easily edit your PDF files with our suite of tools in the blink of an eye.
If the autoApply element is specified as true, the persistence provider must automatically apply the converter to all mapped attributes of the specified target type for all entities in the persistence unit except for attributes for which conversion is overridden by means of the Convert annotation (or XML equivalent). In determining whether a converter is applicable to an attribute, the provider must treat primitive types and wrapper types as equivalent. Note that Id attributes, version attributes, relationship attributes, and attributes explicitly annotated as Enumerated or Temporal (or designated as such via XML) will not be converted. Note that if autoApply is true, the Convert annotation may be used to override or disable auto-apply conversion on a per-attribute basis. If autoApply is false, only those attributes of the target type for which the Convert annotation (or corresponding XML element) has been specified will be converted. If there is more than one converter defined for the same target type, the Convert annotation should be used to explicitly specify which converter to use.Since:Java Persistence 2.1See Also:AttributeConverter, ConvertOptional Element SummaryOptional Elements Modifier and TypeOptional Element and DescriptionbooleanautoApply Element DetailautoApplypublic abstract boolean autoApplyDefault:falseSkip navigation linksOverviewPackageClassUseTreeDeprecatedIndexHelpPrev ClassNext ClassFramesNo FramesAll ClassesSummary: Field | Required | OptionalDetail: Field | ElementCopyright 1996-2015, Oracle and/or its affiliates. All Rights Reserved. Use is subject to license terms.
Dear Shawn,
Thank you very much for the response These are the equations I have used to compute for my RLC and duty cycle to be in CCM. Sorry that I forgot to mention that my boost converter is operating in CCM. Below are the provided Transient Response of the Inductor current with the PWM.
Your first equation ignores all the parasitic elements in the converter. Hence, I am concerned you may expect performance that is not consistent with your expected performance. Thank you for your added waveforms. I took some time to analyze your waveforms and computed what I expect ts output voltage may be. The value I get when I estimate voltage drops for your two switching transistors (vds) and for your inductor real part (rs) is quite close to what you are observing. I then optimized the duty cycle to provide a n output voltage of 2.50 V. I included the equations I used. I also double-checked my result using an on-line tool. I included its result and the link in the attached note. I hope this is useful!
The alternating case converter will allow you to transform your text (no matter the current format) into text that alternates between lower case and upper case. It will generate a capital letter and then a lower case letter within the same word.
If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. The SparkFun bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time. This level converter also works with 2.8V and 1.8V devices. What really separates this Logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel. Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side.
The level converter is very easy to use. The board needs to be powered from the two voltages sources (high voltage and low voltage) that your system is using. High voltage (5V for example) to the 'HV' pin, low voltage (3.3V for example) to 'LV', and ground from the system to the 'GND' pin.
We have tested this logic level converter more for 5V logic on the high side. Looking at the datasheet, the absolute maximum rating for the drain-source voltage is 50V with 0.22A continuous drain current. It should work for higher voltages based on this fact. We just have not stress tested this setup so we are not sure about how efficient it is when using 12V and 24V on the high side and 5V on the lower side.
Doing a quick test and measuring with a multimeter, the logic level converter was able to convert logic between 12V & 5V and vice versa. The logic level converter was also tested between 15V & 5V and 15V & 3.3V without any issues. There will probably be a slightly higher latency if there is a bigger voltage difference as the transistor switches between a logic HIGH or LOW.
What is the bandwidth of the converter? I am using it to convert a 20 kHz PWM signal from 3.3 V to 5 V. On oscilloscope, from a rising edge input signal, the output signal starts with a first-order response from 3.3 to 5 V, reaching 4.98 V after 2 s, in other words, a first-order response with a time constant of 1.1 s (See an oscilloscope screenshot at ). I could not find similar numbers in the BSS138 datasheet but I am not an electronic engineer. Is that first-order time constant correct?
This is a great little board -- it fits right in where the older versions of the SFE logic level converters went and works better! So glad that Sparkfun redesigned the board for full flexibility on all channels! Thanks sparkfun -- using these things all over the place in my mixed voltage digital projects! 17dc91bb1f
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